Let the present ages of Arun and Harish be 4x and 3x years respectively.
Then, 4x + 6 = 26 => x = 5
Harish's age = 3x = 15 years.
Shopkeeper sells at CP using weight of 900 gm instead of1 kg
So, 1000gm ?900 gm = 100gm
?100/900 X 100
?100/9 %
Let Siya's age = x
Then Riya's age = 4x
But given Riya's age = 24
=> 4x = 24 => x = 6
Hence Siya's age = 6 yrs
=> The age difference = 24 - 6 = 18 yrs.
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